geico. just click away with our free mobile app. >>> a brazen assault leaves an american dead in afghanistan. who officials say is behind this latest green on blue attack. >>> and they're on vacation, but they're still pointing fingers. why republicans say the president wants to go over the fiscal cliff. >>> and imagine someone breaking into your home and ransacking your christmas tree, stealing your electronics. meet the family who encountered a real life grinch and caught the thief on camera. it's an unbelievable story, and the family will join us live in this hour. good morning, everybody. on a christmas eve, welcome to "starting point." i'm alina cho in new york. da dana, good morning. >> good morning. alina. i'm dana bash in washington. it's christmas eve. "starting point" begins right now. >>> and our starting point, an american contractor in kabul shot and killed earlier this morning by a woman wearing an afghan police uniform. it happened inside kabul's police headquarters, and it's